Telephone set



W. G. CRAWFORD.

TELEPHONE SET.

APPLICATION FILED MAY 23. 1919.

Patented Feb. 15, 1921.

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I APPLICATION FILED MAY 23, 1919. I 1,368,241 Patented Feb. 15, 1921'.-

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UNITED STATES PATENT OFFICE.

WALTER G. CRAWFORD, OF NEW YORK, N. "55., ASSIGNOR TO WESTERN ELECTRICCOMPANY, INCORPORATED, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

TELEPHONE SET.

Original application filed April 24, 1917, Serial No. 164,160. Dividedand this application filed May 23,

To all 107mm it may concern:

Be it known that I. lVAL'rnn G. GnAwronn, a citizen of the UnitedStates, residing at New York, in the county of Bronx, State of New York,have invented certain new and useful Improvements in Telephone Sets, ofwhich the following is a full, clear, concise, and exact description.

This invention relates to telephone sets for use at the subscribersstations of telephone exchange systems and is a division of my copendingapplication, Serial No. 164,160, filed April 24, 1917, which becamePatent No. 1,337,692, April 20, 1920. More particularly, the presentinvention relates to the construction of a telephone set whereby it maynot only be easily mounted in position but also arranged so that thewiring and various pieces of apparatus are easily accessible forinspection or rearrangement of parts.

In various telephone systems, particularly those of the so-calledintercommunicating type, telephone sets having slightly differentcircuit connections and different arrangements of apparatus are requiredat the different stations. In order not to necessitate the carrying of astock of sets of each particular type it is customary to stock onlycertain types and modify these types to meet the various conditions. Itis therefore desirable that the sets be so arranged that the interior isreadily accessible for making the necessary changes in wiring as well asfor testing and inspection purposes.

The object of the present invention is to provide a telephone set havinga mounting plate which will facilitate the installation of the set andthe making of any repairs or changes in the wiring when necessary, andmoreover a set in which the construction is simple and cheap tomanufacture.

To attain this object, a feature of the invention resides in providing amounting plate having suitable projections which will permit the readyinstallation of the set and also having means for supporting the housingwhen it is removed in order to permit access to the interior wiring andthe various pieces of apparatus involved. This and other features of theinvention may be more clearly understood by reference to theaccompanying drawing, in which Figure 1 shows a mounting plate embodyingthis in- Serial No. 299,154.

vention with its accompanying housing mounted in place; Fig. 2 is a rearView in perspective of the housing; Fig. 3 a perspective view of themounting plate; and Fig. lis a sectional view of a portion of themountmg plate of Fig. 3 having the housing for the set supported thereonin a position which permits access to the apparatus and wiring.

Referring now to the drawing, there is shown a mounting plate 5 which isadapted to be secured to the wall by means of screws passing through themounting holes 6. An opening 7 is provided through which to bring thewiring for the set, and recessed portions 8-8 are also provided at thetop and bottom of the plate as alternative openlugs for the wiring. Thelower portion of the plate is formed as shown to provide brackets 9-9each of which is provided with an opening or slot 10. On the lower partof the housing 11 are the lugs 12-12 of suitable dimensions to engagethe slots 10 and to serve as a support for the housing 11 while theconnections are being made to the interior wiring or changes in theapparatus itself. As a means for securing the Patented Feb. 15, 1 921.

housing to the mounting plate, right-angled brackets 13-13 are formed inthe latter, these being provided with threaded holes 14-1 1 adapted tobe engaged by the screws 15-15 passing through the sides of the housing11. These screws are provided with split washers 16 to prevent theirfalling out when not in use. A U-shaped guide 17 is provided to positionthe wiring of the set which is preferably run in cable form. For thesake of clcarness, this wiring is not shown in the drawing.

\Vhen the housing 11 mounted upon the back board 5 it is held in placeby the screws 15 which engage the threaded openings 14. in thebrackets13-13 of the mounting plate and the lugs 12-12 are out ofengagement with the slots 10-10. Upon removing the screws 141-1 1, thehousing 11 may be moved forward and entirely free of the mounting plate5, or it may be given a rotating motion allowing the lugs 12 to engagethe slots 10 is supported directly on the mounting plate there is littlelikelihood of the housing being misplaced or lost.

What is claimed is:

1. In a telephone set, a housing, a mounting plate, an engaging memberon said housing, and a corresponding engaging member on said plate, saidmembers being out of engagement ,when the housing is mounted upon theplate, but adapted to engage each other to support said housing in anopen position. i

2. In a telephone set, a housing provided with supporting lugs, and amounting plate having a bracket equipped with slots adapted to engagesaid lugs to support the housing in an open position, said lugs beingout of engagement with the slots when in a closed position, andadditional bracket members adapted to support the housing in a closedposition.

3. In a telephone set, a housing provided with supporting lugs, and amounting plate having a bracket equipped with slots adapted to engagesaid lugs to support the housing in an open position, said lugs being soan ranged-as not to engage the slots with the housing when in a closedposition.

In Witness whereof, I hereunto subscribe my name this 19th day of May A.1)., 1919.

WVALTER G. CRAWFORD.

